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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view showing a conventional
speaker, FIG. 2 is a graph showing the sound pressure and frequency characteristics of the same
speaker, and FIG. 3 is a sectional view showing one embodiment of the speaker of the present
invention. It is. E · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · voice
coil, 26 · · · · · · · magnetic magnetic Figure 1 Figure 1 59 1 real opening 52-79 925 (2 ) Fig. 2 Fig.
DETAILED DESCRIPTION OF THE INVENTION The present invention is intended to prevent
abnormal vibration of a work machine, to deal with a large speaker, and to stabilize its
characteristics. The conventional speaker is configured as shown by the speaker 1111. That is,
the frame 6 is welded to the field portion 6 constituted by the plate 2 provided with the center
ball 1, the ring-shaped magnet 3 and the ring-shaped upper plate 4, and Attach a diaphragm with
edge 8 pasted to the edge, attach two voices-10 to the lower part of ζofill k · 0, and support the
middle part of voice coil 10 with damper 11 The lower part of the magnetic sensor 6 is correctly
fitted to the magnetic gear of the field section 6 and the goo 2, and further, the dust cap 13 is
attached to the upper surface of the central portion of the diaphragm 9. In such a configuration,
when the speaker is in operation and a large input or the like is applied, a noise is generated in
the sound pressure-frequency characteristic as shown in FIG. , Hl-Fi playback of the speaker has
been a contributing factor. Also, when the work is large, the outer periphery K11 of the
diaphragm SO is worn at the outer periphery K111 of the diaphragm SO, and the outer
circumference of the vibration board e is Not only causes deformation and vibration, but also
causes anomalous noise, and even at the time of small input and small amplitude, the outer
peripheral part of the diaphragm 9 is subjected to abnormal vibration, causing deterioration in
the characteristic surface. Is To Toru. The present invention eliminates the above-mentioned
conventional drawbacks. 3 or less, in order to explain the work of the present invention between
the two embodiments according to both JISIIK. Reference numeral 14 denotes a field section,
which comprises the field section 14, a center pole 16, a nine plate 16, a ring-shaped magnet 17,
and a ring-shaped upper grate 18. The one part 14 Kd frame 19 is stable. And this frame 1ttso is
provided at the peripheral edge of the frame 2 oK completed, and 21 is attached by bonding or
the like.工 振動 、 1 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110
110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 九 九 九 九 九 九
九 九 九 九 九] The outermost periphery of diaphragm 22 is frame 1 * Os edge O rise) @ 5zso
inner edge lC1 intestine and lower intestine located between OI1 and viewed from the top, work
with diaphragm 2jtK. 21 has become K so as not to be seen at all. 壕 9, O 壕, 工 21 紘 non-airpermeable 廖, non-air-permeable m-resin, h ゐ 紘 rubber, etc. Composed of K, such as O-fiber or
light metal such as pulp, Ka Ka 合 諧 4 B ゐ supporting the vibrating plate 22 to be threatened.
The #i poin coil 24 is attached to the center lower part 11 of the diaphragm 22 and supported by
the 240Pil 1 section damper 26 in the O pois cari, and the lower part of the voice coil 240 is
properly entrained in the boundary section 140 magnetic carrier and pin 26. As you are afraid of
K11 l bh. ! Good, 振動 O diaphragm ZaO central thin top plate is pasted with company dust and
heat. Among them, the 7th-AIIIO start) @ aao shingetsu is configured so that the outermost part
of @ @ 922 does not come out to the outside of the frame 1 · O start D @ Q @ even at the time of
large input amplitude. It is done. With such a configuration, even if the edge 21 is reversely
resonated, it is broken at the outermost periphery of the vibration I [22 and is not radiated to the
front surface, so that the adverse effect due to processing or diresonance can be removed. Since
the diaphragm 22 is joined with the inner surface of the diaphragm 22 at the time of large
amplitude, the vibration I [22 inner circumferential edge is compared with the outermost
peripheral portion. Can be made strong enough to withstand breaking stress, be able to resist 6
times a new single-acting line (not), be strong against stress at small amplitudes, and can be
made to have a stable long life 040 by 90 years . As described above, the main shock IIO speaker
has various advantages and is of great practical value.
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